By: Isaiah Canlas and Max Tchen

Advantages/ Disadvanages Advantages  No harmful emissions  Environment friendly  Renewable  Fuel efficient Disadvantages  Expensive  Transportation  Highly flammable  Dependent of fossil fuels for production

Equipment contraction and usage  Steam methane reformation High temperature and pressure break the hydrocarbon into hydrogen and carbon oxides Elecytolysis ○ Electrically splitting water into hydrogen and oxygen ○ Currently, global hydrogen production is 48% from natural gas, 30% from oil, and 18% from coal; water electrolysis accounts for only 4% ○ Distribution Pipeline High-Pressure Tube Trailers Liquefied Hydrogen Tankers

Uses  There are two primary uses for hydrogen today. About half is used in the Haber process to produce ammonia (NH3), which is then used mostly as fertilizer.  The other half of current hydrogen production is used to convert heavy petroleum sources into lighter fractions suitable for use as fuels. This latter process is known as hydrocracking.  Hydrogen fuel cells today are slowly replacing industrial batteries due to their efficiency, convenience and compactness.

Environmental Problems  Molecular hydrogen leaks slowly from most containment vessels. It has been hypothesized that if significant amounts of hydrogen gas escape, hydrogen gas may be able to cause ozone depletion in the stratosphere.  Hydrogen requires at least twice as much energy as electricity twice the tonnage of coal, twice the number of nuclear plants, or twice the field of solar panels to perform an equivalent unit of work.

Consumption (U.S. & World)  Hydrogen refueling infrastructure does not exist yet in most parts of the country. California has a few stations in operation, and more under construction.  Although the cost of hydrogen is more expensive than gasoline on an energy equivalent basis, because the electric drive system is two to three times more efficient than an internal combustion engine, the fuel costs are roughly equivalent on a distance traveled basis.  Hydrogen power is slowly being used to create ammonia, convert heavy petroleum sources into more suitable fuels, and replace batteries.

Efficiency/Cost  Hydrogen contains much less energy than gasoline or diesel on a per-volume basis, making it difficult to store enough hydrogen onboard an FCV (Fuel Cell Vehicle) to go as far as a comparable gasoline vehicle between fillups.  Cost per gallon hydrogen: $1.00 – 1.80kg (gge)  Cost per gallon gasoline: $2.3  Current electrolysis procedures require more energy to extract hydrogen than the total amount of energy provided by the manufactured hydrogen fuel.

Links  "Advantages and Disadvantages Of Hydrogen Energy."ConserveEnergyFuture. N.p., 19 Jan Web. 07 Jan  "Hydrogen Economy: Energy and Economic Black Hole." RSS. N.p., n.d. Web. 09 Jan  Hydrogen." Hydrogen. N.p., n.d. Web. 06 Jan  "The Truth About Hydrogen." Popular Mechanics. N.p., n.d. Web. 08 Jan  "Hydrogen and Fuel Cells - Production." The Pros and Cons of Hydrogen and Fuel Cells, Production. N.p., n.d. Web. 08 Jan  "Pros and Cons of Hydrogen Energy | Enlighten Me." Enlighten Me. N.p., 11 Aug Web. 09 Jan  "Hydrogen Fuel Cost vs Gasoline." HES Hydrogen RSS. N.p., n.d. Web. 09 Jan